ASTROSAT CZTI

Data Quality Report

Orbit 24833

Creation date: 2024-06-27T19:10:23.920156
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A08_003T02_9000003630_24833cztM0_level2.evt modeM0/AS1A08_003T02_9000003630_24833cztM0_level2_quad_clean.evt
Size (bytes)430,194,24088,534,080
Size410.3 MB 84.4 MB
Events in quadrant A3,053,580567,978
Events in quadrant B3,176,242576,496
Events in quadrant C3,093,935544,713
Events in quadrant D3,261,350537,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133082
B0135642
C0133702
D0141172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520160.245399%
B6520320.490798%
C6520661.012270%
D6520350.536810%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7465 6521 0 0 0.00% 0.00%
B 7465 6521 11 11 0.15% 0.17%
C 7465 6521 0 0 0.00% 0.00%
D 7465 6521 18 18 0.24% 0.28%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 9849 56.29 791 774 161.2
A 3 137 7585 42.24 791 774 161.2
A 0 226 6660 36.51 791 774 161.2
B 10 251 51130 333.11 786 765 151.2
B 7 202 22386 143.0 786 765 151.2
B 12 111 18956 120.31 786 765 151.2
C 14 238 121329 672.06 758 762 179.4
C 7 247 15581 82.6 758 762 179.4
C 13 61 5037 23.83 758 762 179.4
D 10 199 114182 612.41 765 745 185.2
D 8 195 107978 578.91 765 745 185.2
D 12 218 106437 570.59 765 745 185.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter